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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition

Amount, before accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition

Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer, when right is conditioned on something other than passage of time.

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- Definition

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

No definition available.

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- Definition

Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Revenue - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Earnings invested in the business	$ 1,165.0		$ 1,165.0			$ 983.6
Revenue	1,342.4	$ 1,328.8	$ 4,099.2	$ 3,952.1
Customer payment terms			60 days
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Earnings invested in the business					$ 3.4
Difference between Revenue Guidance in Effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer contracts					5.2
Deferred tax liability					1.2
Transferred at Point in Time \| Difference between Revenue Guidance in Effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue					0.6
Americas
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	1,048.1	1,039.3	$ 3,199.5	3,147.1
Americas \| Global Talent Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	490.4	489.2	1,442.9	1,456.9
EMEA
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	288.1	284.6	882.8	791.4
EMEA \| Global Talent Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	11.0	$ 8.9	34.3	$ 25.3
Deferred Sales Commissions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Capitalized contract cost	2.4		2.4		3.2
Capitalized Contract Cost, Amortization	0.4		1.2
Deferred Fulfillment Costs
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Capitalized contract cost	4.0		4.0		$ 2.0
Capitalized Contract Cost, Amortization	$ 4.1		$ 8.7